JPH10249805A - Router cutting edge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately execute a grooving process of a decorative plywood on which a decorative sheet or film is laminated on its surface by providing a tapered part inclined outward at a base end near a front end of a shaft, and providing a chamfering cutting edge continued to a cutting edge at the part. SOLUTION: The router cutting edge comprises a tapered part 1a near a front end of a shaft 1, and a cutting edge 3 also at the part 1a. Thus, the edge 3 is obliquely brought into contact with an upper corner of an end face of a groove formed on a decorative plywood to cut a decorative sheet of its surface by retaining the sheet. Accordingly, the sheet is cut together with a base material, and hence the material is not released or retained as a bur, and can be clearly chamfered. Thus, the router cutting edge is used to groove the plywood. A diameter and length of the front end of the shaft 1 to the part 1a are efficiently executed in one step while chamfering it by the grooving of the groove and depth to be cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a router cutting blade mounted on a router, which is a kind of woodworking milling machine, and used for cutting grooves.

[0002]

2. Description of the Related Art Conventionally, as this kind of router cutting blade, a cutting blade 12 formed spirally around a tip (lower side in FIG. 7) of a shaft body 11 as shown in FIG. As shown in FIG. 8, there has been a configuration in which a cutting edge 14 is provided continuously in the longitudinal direction of the outer periphery of the shaft body 13 with respect to the distal end surface.

[0003] These router cutting blades are attached to the main shaft of a router (not shown), which is a kind of woodworking milling machine, and are used to cut grooves in a workpiece by being driven to rotate at high speed. .

FIGS. 9 and 10 are a plan view and a cross-sectional view, respectively, of a workpiece in which a groove 15a is cut by the conventional router cutting blade. Here, the workpiece to be processed was obtained by attaching a decorative sheet or a film material 17 made of a thermoplastic resin to a base material 16 made of an inorganic flat plate, and applying a desired pattern or color to the surface. It is a decorative plywood 15. As shown in the drawing, on the processed end face 15b of the decorative plywood 15 processed by the router cutting blade, a decorative sheet (film) 17 is floated or peeled off, or a decorative sheet (film) 17 not cut is formed. , Burr 1
7a.

[0005]

In the conventional router cutting blade described above, the one having a spiral cutting blade as shown in FIG. In the one having a vertical cutting edge as shown in FIG. 8, the cutting edge functions to scrape the end face of the workpiece in the vertical (horizontal) direction. .

Accordingly, when a decorative plywood having a film or sheet attached to its surface is processed using these router cutting blades, this film or sheet remains as burrs on the cutting end face, or the film around the cutting end face There is a problem that the sheet is peeled off or the sheet cannot be cleanly processed.

[0007] Further, from this, conventionally, when this type of decorative plywood is processed by a router, a finishing operation such as deburring is required thereafter, which is troublesome, the work efficiency is low, and the operation cost is increased. Was.

An object of the present invention is to solve the problems of the conventional router cutting blade.

[0009]

Means for Solving the Problems In order to solve the above-mentioned problems, the invention according to claim 1 of the present invention is characterized in that a cutting blade is provided continuously in the longitudinal direction of the outer periphery of the shaft body and the outer periphery thereof, A router cutting blade mounted on the main shaft of a router, which is a type of milling machine, and used for cutting grooves, is provided with a tapered portion whose base end side is inclined outward near the distal end of the shaft body. A cutting blade for chamfering is provided continuously to the blade.

According to a second aspect of the present invention, in the router cutting blade according to the first aspect, the diameter and length of the shaft body leading to the tapered portion correspond to the width and depth of the groove to be cut, respectively. The cutting edge provided in the tapered portion is in contact with a corner on the surface side of the groove with a predetermined holding angle,
A groove having a predetermined width and depth is cut by chamfering a corner thereof.

According to a third aspect of the present invention, in the first or the second aspect of the present invention, a rake angle is formed on a cutting blade provided on a tip end surface of the shaft body. The invention according to claim 4 is the invention according to claim 1 to claim 3.
In the router cutting blade described in any one of the above, the cutting blade is formed of diamond or sintered diamond.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on illustrated embodiments. FIG. 1 is a front view showing an embodiment of a router cutting blade according to the present invention, FIG. 2 is an enlarged view of a lower surface thereof, and FIG. 3 is a right side view of the router cutting blade shown in FIG. As shown in the drawing, this router cutting blade is provided with a tip surface (lower end in FIG. 1) of a shaft body 1 and a cutting edge 2 in a longitudinal direction of an outer periphery continuous with the tip surface, similarly to the conventional one.

Here, in the router cutting blade of the present invention, a tapered portion 1a is provided near the tip of the shaft body 1, and the tapered portion 1a is continuous with the cutting blade 2 and the cutting blade 3 for chamfering.
Is provided.

The tapered portion 1a has a base end side (upper side in FIG. 1) inclined outward. That is, the diameter of the shaft body 1 is larger on the proximal end side than on the distal end. Further, in the router cutting blade of the present invention, the cutting blade 2 provided on the distal end face is provided.
Is provided with a predetermined rake angle so that it can easily bite into the workpiece. The rake angle is a radial rake angle β indicating an angle at which the cutting blade 2 is eccentric with respect to the rotation center of the shaft body 1 or an axial rake angle α indicating an angle at which the cutting blade 2 is inclined backward with respect to the rotation direction. Or a combination of the two.

The cutting blades 2 and 3 may be formed integrally with the shaft 1, or may be formed by attaching a separately prepared blade (not shown) to the shaft 1. There may be.

The router cutting blade of the present invention has the above configuration, and the chuck fixed side (upper side in FIG. 1) is attached to the main spindle (not shown) of a router, which is a kind of woodworking milling machine, just like the conventional one. By attaching, 20,000
It is driven to rotate at a high speed of about 0 rpm to cut a groove in a workpiece.

Next, cutting of a workpiece using the router cutting blade of the present invention having the above configuration will be described. As shown in FIG. 4, the workpiece to be processed by the router cutting blade of the present invention is such that a decorative sheet or film material 5 made of a thermoplastic resin is stuck on a base material 4 made of an inorganic flat plate, The decorative plywood 6 has a desired pattern and color.

First, when the router cutting blade is rotated at a high speed and pressed against the surface of the decorative plywood 6, the cutting blade 2 provided on the tip end surface of the shaft body 1 comes into contact with the surface of the decorative plywood 6 and starts cutting. However, at this time, in the router cutting blade of the present invention, since the cutting edge 2 has the predetermined rake angles α and β, the cutting edge 2 smoothly bites into the decorative plywood 6. Therefore, positioning becomes easy, and cutting of the groove 6a can be started with high accuracy from a desired position on the surface of the decorative plywood 6.

Further, in the router cutting blade of the present invention, the tapered portion 1a is provided near the tip of the shaft body 1, and the tapered portion 1a is provided.
The cutting edge 3 is also provided on the decorative plywood 6.
Obliquely in contact with the upper corner 6b of the end face of the groove 6a formed in
Cutting is performed while pressing the decorative sheet (film) 5 on the surface. Therefore, this sheet (film) 5
Is cut together with the base material 4 and does not peel off from the base material 4 or remain as burrs, so that clean chamfering can be performed.
Note that the inclination of the tapered portion 1a is adjusted by the decorative plywood 6 to be processed.
May be determined as appropriate according to the nature of.

As described above, the router cutting blade of the present invention is used for grooving the decorative plywood 6. Further, in the above-mentioned router cutting blade, the diameter D and the length L of the tip of the shaft body 1 reaching the tapered portion 1a are changed by the respective grooves 6a to be cut.
Is formed in dimensions corresponding to the width and depth of the groove 6a, the groove 6a having the predetermined width and depth can be efficiently cut in one step while performing the chamfering.

In the above description, the shaft body 1 is formed so that the cutting of the groove 6a can be started from a desired position on the surface of the workpiece.
The example in which the rake angles α and β are given to the cutting edge 2 provided on the tip end surface of the workpiece, but when the processing is started from the end of the workpiece, the rake angles α and β are not necessarily required. Absent.

Furthermore, in the router cutting blade of the present invention, the cutting blade 2 on the tip end side of the shaft body 1 and the cutting blade 3 of the tapered portion 1a may be separate bodies. The blades 2 and 3 can be arranged at an optimum angle suitable for processing, which is more preferable.

FIGS. 5 and 6 are a front view and a side view, respectively, showing another embodiment of the present invention. As shown,
In this example, one side of the shaft body 10 provided with the tapered portion 10a is cut off, and the blade body 20 is integrally fixed thereto. The blade body 20 is formed of sintered diamond obtained by sintering artificial diamond fine particles, and has an outer surface, that is, a tip surface of the shaft body 10 and a longitudinal direction of an outer periphery continuous with the tip surface. The cutting blades 20a, 20b, and 20c are formed continuously from the tapered portion 10a. This sintered diamond has extremely high hardness, and it is possible to perform grooving work even when a light alloy or a titanium alloy is used as the base material 4 and to improve the wear resistance of the cutting blade. It is something that will be entangled.

In the above description, the continuous cutting edges 20a, 20
Although an example in which only one blade body 20 having b and 20c is provided has been described, the shaft body is formed in a corresponding shape, and a plurality of similar blades are provided on the outer portion by attaching a plurality of blade bodies. The number of blades attached to the shaft body is not limited to the above.

[0025]

As described above, according to the first aspect of the present invention, as described above, the decorative sheet is provided on the surface by providing a taper portion on the router cutting blade and providing a cutting blade for chamfering. It is possible to improve the work efficiency as well as reduce the work cost, since the groove work can be performed with high precision on the decorative plywood to which the plywood and the film are attached, eliminating the need for finishing work such as deburring. Get off.

According to a second aspect of the present invention, the diameter and length of the shaft body leading to the tapered portion are formed to dimensions corresponding to the width and depth of the groove to be cut, respectively. In addition to the effects of the present invention, there is an effect that a groove having a predetermined width and depth is cut in a single step.

Further, according to the third aspect of the present invention, in addition to the effects of the first or second aspect of the present invention, a rake angle is formed on a cutting edge provided on the tip end surface of the shaft body.
There is an effect that the groove can be cut with high accuracy from a desired position on the surface of the workpiece. According to the fourth aspect of the present invention, by forming the cutting edge with diamond having high hardness or sintered diamond, in addition to the effect of the invention described in each of the above-mentioned claims, the range of the object to be processed is expanded, and Since the wear property is improved, the life is prolonged, and high processing accuracy can be maintained for a long time.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a router cutting blade according to the present invention.

FIG. 2 is an enlarged view of a lower surface of the router cutting blade shown in FIG.

FIG. 3 is a right side view of the router cutting blade shown in FIG. 1;

FIG. 4 is a sectional view of a decorative plywood showing an example of processing by the router cutting blade of the present invention.

FIG. 5 is a front view of a router cutting blade according to another embodiment of the present invention.

FIG. 6 is a right side view of the router cutting blade shown in FIG. 5;

FIG. 7 is a front view showing a conventional example of a router cutting blade.

FIG. 8 is a front view showing another conventional example of a router cutting blade.

FIG. 9 is a plan view of a decorative plywood showing a conventional processing example.

FIG. 10 is a cross-sectional view of a decorative plywood showing a conventional processing example.

[Explanation of symbols]

 1,10 Shaft 1a, 10a Taper 2,3,20a, 20b, 20c Cutting blade 20 Blade

Claims (4)

[Claims] 1. A router cutting blade which is provided on a main shaft of a router, which is a kind of woodworking milling machine, and which is used for cutting a groove, wherein the cutting blade is provided continuously with a tip end surface of a shaft body in an outer peripheral longitudinal direction. A router cutting blade, characterized in that a tapered portion whose base end side is inclined outward is provided near the distal end of the body, and a cutting edge for chamfering is provided in the tapered portion continuously to the cutting edge. 2. The diameter and length of the shaft body tip reaching the tapered portion are as follows:
Each of the cutting blades is formed in dimensions corresponding to the width and depth of the groove to be cut, and the cutting blade provided in the tapered portion contacts a corner on the surface side of the groove with a predetermined pressing angle, and has a predetermined width. 2. The router cutting blade according to claim 1, wherein the cutting of the groove having the depth and the depth is performed by chamfering a corner thereof. 3. The router cutting blade according to claim 1, wherein a rake angle is formed on a cutting blade provided on a tip end surface of the shaft body. 4. The router cutting blade according to claim 1, wherein the cutting blade is formed of diamond or sintered diamond.